Bootstrap shouldn't give up due to missing xrefs in the manual

[Richard Stallman]

Does this patch eliminate the problem?

*** Makefile.in 11 Nov 2004 09:58:10 -0500      1.298
--- Makefile.in 30 Nov 2004 21:19:32 -0500      
***************
*** 719,727 ****
  # put the info files in $(srcdir),
  # so we can do ok running make in the build dir.
  info: force-info
!       (cd man; $(MAKE) $(MFLAGS) info)
!       (cd lispref; $(MAKE) $(MFLAGS) info)
!       (cd lispintro; $(MAKE) $(MFLAGS) info)
  dvi:
        (cd man; $(MAKE) $(MFLAGS) dvi)
        (cd lispref; $(MAKE) $(MFLAGS) elisp.dvi)
--- 719,727 ----
  # put the info files in $(srcdir),
  # so we can do ok running make in the build dir.
  info: force-info
!       -(cd man; $(MAKE) $(MFLAGS) info)
!       -(cd lispref; $(MAKE) $(MFLAGS) info)
!       -(cd lispintro; $(MAKE) $(MFLAGS) info)
  dvi:
        (cd man; $(MAKE) $(MFLAGS) dvi)
        (cd lispref; $(MAKE) $(MFLAGS) elisp.dvi)